Practical software fixes, setup guides, and tool workflows.

How to Fix Nginx Upstream Connection Refused on Port 80

When nginx logs show "upstream connection refused" while connecting to port 80, it means ...

Fix Discord Black Screen from Chrome Hardware Acceleration

Why Chrome Hardware Acceleration Causes Discord Black Screen

When Chrome uses hardware a...

Python Command Not Found in Windows Terminal: Fixes

When you type python or python3 in Windows Command Prompt or PowerShell...

How to Add a Bluetooth Device in Windows 11

Adding a Bluetooth device in Windows 11 is usually straightforward, but sometimes things don'...

Fix Chrome Crash on Startup Due to Hardware Acceleration

If Chrome crashes immediately when you open it, or freezes and becomes unresponsive, hardware acc...

How to Fix Docker Image Pull Access Denied Error

When you run docker pull and see access denied, Docker cannot authentic...